Effect of Grinding Environment on Surface Grinding of Duplex Stainless Steel (2205/UNS S32205) at Various Depth of Cut

ABSTRACT The research objective of the present experimental work is to interpret the changes in the characteristics of Duplex stainless steel (2205/UNS S32205) during a surface grinding operation when subjected to different grinding environments provided between the grinding wheel and the surface. A total of nine test samples of dimensions 70 mm in length, 18 mm in breadth, and 6 mm thick were cut by a wire EDM machine from a raw material plate of 300 mm length, 300 mm breadth, and 6 mm thickness in order to minimise any kind of thermal gradient in the sample. The grinding is performed on a conventional surface grinding machine using an Aluminium Oxide grinding wheel (AA46/54 K5 V8). The grinding environments considered in our experimental work are Air, automotive coolant (Castrol Radicool: JIS K 2234 Class 2, ASTM D3306, BS 6580), and cutting fluid (Synth x). The process parameters considered are depth of cut and grinding environment; other parameters like tool rotational speed and flow rate of coolant and cutting fluid are kept constant. Various characterization tests were conducted, including Metallographic and microstructure Test, micro hardness test, and Micro Magnetic Brakhausen Noise Test, for surface characterization of duplex stainless steel.